Door lock



DHIQZO, 1938. R. B. MCFARLANE DOOR LOCK Filed 001;. 9, 1937 EL ffPatented Dec. 20, 1938l UNITED STATES' PATENT oFFicE DOOR LOCK RobertBuchanan McFarlane, Toronto, Ontario,v Canada Application October 9-,1937, Serial` No. 168,134

9v Claims. v(Cl. 292-171) My invention relates to improvements in doorbeing in the position as shown in Figure 4, that locks for automobilesand the like, and the object is, with the press button moved inwardly.of my invention is to provide a lock mechanism Figure is a horizontalcross-sectionalY view wherein the usual protruding door handle iselimthrough the edgeportion of the automobile door inated, and whereinthe lock is actuated by a showing the upper ed-ge portion of my lock in5' press button embedded in the door and having its the lockingposition, asA illustrated in Figure 3. outer face substantially flushtherewith. Figure 8 isa vertical cross-sectional view Another object ofmy invention is to incorthrough the press button, showing the mountingporate a lock in such press button, so that by therefor,` and the keyoperated roll-back con- 10 0 actuation of a key the press button canbe-locked tained therein.

against inward movement and thus lock the door. Figure 9 is across-sectional View through the A further object of my invention is tofurnish door lamb and illuSlIang the IIIOVable Spring my lock with theusual blot which protrudes from actuated lug protruding from the lamb t0Open the edge of the door, and to provide for the Spring the door whenlthe door bolt is retracted, and actuation of Such belt through e phmgermeme' Figure 10 is a front elevational view of a frag- 15 her Whieh alsopre1-,rudes from the edge of the mentary portion of the door containingthe lock door and which is pushed inwardly into the leek and also afragmentary portion oi the door iamb. by the door jumb when the door isbeing Closed, f Like characters of reference indicate corresuch inwardmovement of the plunger setting sponding parts in the different views ofthedrawa spring mechanism which shoots the bolt when lg'- t the bolt isregistering with its receiving orice in My 106k mechanism iS mounted1113011 a base the door jump, plate I and this plate is secured againstthe inner A still further object of my invention is to fur-v Side 0f thed001' 2 in am Suitable manner. A high e, Simple trigger mechanismactuated by the lock bolt 3 and a plunger l alternately protrude inwardmovement of the press button on the door, thYOllgh OrCeS in the edge 0fthe door and slide 25 such-trigger mechanism releasing the spring UDCHthe facel 0f the Plate They plunger' 4 iS mechanism in the 100k teretract the bolt. formed with a charnfered outer face 5 so that it Withthe foregoing and other objects in view, is readily retractable as suchchamfered face as shall hereinafter appear, my invention consists engagethe 3001' jambof a door lock constructed and arranged all as The lnnelend 0f the plunger 4 1S Slldably 30 hereinafter more particularlydescribed and illusattached t0 a Slide block 6, Such Slide block beingtrated in the accompanying drawing, in which: 0f L-Shaped form andPrOVided With a slot l Figure l is a front elevational view of my lockthrough Which a pin 31 Carried' upon the plunger us applied te a,fragmentary pur-tien` of a Steel 4 freely prolects.` The inner end ofthe plunger door, In this View the 106k is Shown as. when 4;is.alsoattached toa rod 9d which extends across 35 the door is open. the platevly and is movable with the plunger. The Figure 2` is e, Similar View toFigure 1 In this outer end of the rod 9 is slidably contained withvieWthe 1eek is Shown es when the door is parin an orifice in the upturnedend of a bracket lll tially closed, that is, with the plunger engaging580.111" e@ 1.30 the plat@ f- Y. The plunger 4` and rod 9 me amb andbefore the looking boit is snot. are resllleutly held eetlustluwardmovement by 4o Figure 3 is a similar view to Figure 1. In this theprovlslm Off Spfal Vsprmg H @Tried D011 view the door is shown fullyclosed and the bolt the md 9" mid havmg one 'end engagmg. the up Shot i1 ngiigo ntelrttd Ft '1 Op. .Figure 4 1S a smul Ylew to Fgure 12. Inthis The ioek boit 3 is attached al; iis inner end to 45 View the pressbutton 1s shown as havmg been a strip i173' extending across the plateI. Such moved inwardly to permit the bolt to beretracted Strip is formedwith a Slot '4 and the plate I under a Sprmg mechamsm the 100k bemg 1nthe carries aV stud l5 which protrucles through the lposition whereinthe door is ready for opening. Slet tov Support the Strip and te 9,150form part Figure 5 is a horizontal cross-sectional View of e leekthgdevice for securing the deorfrem the 50 through the outer edge portionsof the automoinside, as shall hereinafter appear, bile door and jamb,showing the lock in the posi- The plunger assembly and the bolt assemblytion as illustrated in Figure 3, that is,J the door are connected by alever ItV formed with an lacked.` oriiice l1 intermediately of itslength, and through Figure` 6` isa sirnilarview to` Figure 5, the lockwhichoriice a rod I8 extends. The rod I8A is con- 55 tained withinV thevicinity of its ends within a pair of lugs I9 and 28 which protrudeupwardly from the face of the plate I. The lug 20 is formed with aV-shaped edge 2| against which the lever I 6 fulcrums. The upper end ofthe lever I6 is pivoted upon a pin 22 projecting from the strip I3, andthe lower end of the lever is formed with an orifice 23 through whichthe rod 9 extends. The lower end of the lever I6 also rests against aprotuberance 24 upon the end of the slide block 6.

A second lever 25 extends between the stationary rod I8 and the movablerod 9. This lever is fulcrumed upon a pivotal pin 26 protruding from theplate I and is formed with oriiices 21 and 28 in its ends and throughwhich theV rods I8 and 9 extend. A pair of spiral springs 6I and 62 arecarried upon the rods I8 and 9 respectively and are interposed betweenthe levers l and 25.

For controlling the relative movements of the plunger 4 and slide block6, I form the outer face of the plunger 4 with a transverse slot 29adapted to receive a stop bar 30 which is pivoted at its lower endbetween a pair of lugs 3l projecting from the lower face of the plunger4. When the` stop bar 38 is depressed into the slot 29, Vas illustratedin Figure 6, the slide block 6 can slide across the outer face of theplunger 4 within the limits of its slot 'I and pin 8 protrudingthereinto. When the bar 30 is swung partly out of the slot to projectabove the outer face of the plunger 4, the side of such bar engages theadjacent end of the slide block 6 and thus the slide block and plungercan only move in unison. The upper end of the stop bar 3i] is formedinto a U-shape 32'and its end portion lies tangentially in respect tothe press button assembly.

The press button assembly comprises a cylinder 33 so positioned as tohave its outer end contained within a recess 34 in the outer face of thedoor. The cylinder is formed with a bottom'35 having an orice 35 in oneside thereof, such oriiiceV receiving a stud 31 which projects outwardlyfrom the plate I between the plunger 4 and bolt 3. The stud 31 is formedwith a diametrical slot 38 extending from its lower end to the vicinityof its top, and the lower end of the cylinder 33 contains a bridging bar39 extending diametrically across the cylinder and through the outer endof the slot 38 in the stud 31. By this construction the cylinder 33 canbe moved in or out upon the stud 31 but cannot be removed therefrom. Aspiral spring 4G surrounds the stud 31 and is interposed between theplate I and the bottom 35 of the cylinder 33 so that the cylinder isnormally retained in the outermost position relatively to the stud, asillustrated in Figure 8.

One end of the bridging bar 39 is utilized to carry a jaw 4I and therecess 43 within the jaw contains the upper end portion of the stop bar3U. It will thus be apparent that when the press button or cylinder 33is pushed inwardly that as the jaw 4I moves therewith the end of thestop bar 30 will also be depressed, thus moving the lower end of thestop bar into the slot 29 from out of its abutting position against theslide block 6. The

upper end of the cylinder 33 contains a lock 44 and from which protrudesa bolt 45 which is contained within the cylinder and movable from theposition shown in full lines in Figure 8 into the position shown indotted lines through the use of which extends to an actuatable handleprovided upon the inside of the door, of the usual type. The V*strap 41is slidably connected to the strip I3 through the medium of a pin 48which projects outwardly from the strip I3 into the slot 49 in the endportion of the strap 41. The strip I3 carries a pivotally mountedU-shaped catch member 50 mounted upon a pin 5I positioned upon the stripI3 in the vicinity of the end of the slot I4, and such U-shaped memberis also pivotally connected to the end of the strap 41 so that in normalactuation of the lock from the outside, the assembly of the strip I3,strap 41 and member 50 all move relatively to the pin I5 projecting'through the slot I4 in the strip.

Whenthe bolt 3 is in the outermost or locked position, as illustrated inFigure 3, the U-shaped member 50 is so positioned as to have its hookvportion above the pin I5, and if it is desired to lock the door fromthe inside, the handle upon the inside of the door (not shown) isactuated to move the strap 41 within the limits of the length of theslot 49 whereby such movement will hook the U-shaped member 59 aroundthehead cf lthe pin I4, as illustrated in dotted lines in Figure 3. Itwill thus be appreciated that irrespective of any actuation of the lockfrom the outside that Y the bolt and its strip I3 cannot be movedinwardly due to the engagement of the member 50, carried upon the stripI3, with the stationary stud I5. To unlock the door from the inside, itis only necessary to move the insidehandle so that it exerts a pull uponthe strap 41 and in turn a retracting pull upon the strip I3 and bolt 3whereby the bolt is retracted into the lock, when the door can beopened.

To open the door when the lock bolt is retracted, I furnish a resilientelement which engages the door under compression when the door isclosed, and when the lock bolt is retracted to free the door, suchresilient element kicks the door open. In the drawing the up-turned endportion 52 of the plate I is formed with a lug 53 which protrudes fromthe edge of the door and is receivable within a transverse recess 54 inthe door jamb 55. The door jamb is also formed with a bolt receivingrecess 58 above the recess 54. The transverse recess 54 has a slot 51 inthe bottom thereof through which a lug 58 protrudes. The lug is carriedupon a slidable cap 59 movable along the length of the slot 51 against aspring 68. When the door is being closed, the lug 53 comes into contactwith the lug 58, and compresses the spring 60 so that when the door lockis disengaged to permit the door to be opened, the lug 58 pushingagainst the door lug 53 under the inuenceof the spring 68, kicks thedoor open.

' When the door is open, the lock is in the position shown in Figure l,that is, withithe lock bolt 3 `retracted and the plunger 4 protrudingunder a slight Vcompression of the spring II tending to move the rod 9andattached plunger 4 outwardly. The pressbutton with its stopV bar 30is also in the outermost position, as illustrated in FiguresA 5 and 8.When the door is swung towards the door jamb 55 in being closed, thechamfered face 5 of the plunger 4 engages the edge of the jamb and asthe door is being moved inwardly into the closed position, the lockmechanism assumes the positionV as shown in Figure 2. From this gure itwill be seen that as the plunger 4 is moved inwardly its rod 9 is alsomoved inwardly further compressing the springA I I. In conjunction withthe inward movement of the plunger 4 and rodl 9, theI slideblock 6,-alsois, movedinwardly through the engagement of the stop bar 30therewith. Thestop bar 3.0 is carried by the plunger 4 andi` movabletherewith.

The slide block 6 is engaged by the lower end of thev lever I6, so thatthrough its inward movement the lever I6 is swung in a clockwisedirection and thus compresses both the springs 6I and 62. In thismovement the levez1 25 also moves under the spring pressures and assumesa position substantially as shown in Figure 2. During the closingmovement of the door, the bolt 3 and its strip I3*I carryingA the upperend of the lever I 6 are not free to move as the outer end' of the bolt3 is pressing against the side of the jamb and cannot be shot. until thebolt registers with the bolt receiving recess 56 in the door jamb.y Whenthe door isbeing closed, the compressed springs 6I and 62 are tending toshoot the bolt 3.

When the door is fully closed the lock assumes the position shown inFigure 3, that is, with the bolt 3 shot into the bolt receiving recess56, and

the side` of the lever I6 again resting against the fulcrumed edge ZI ofther lug 20. It will be readily apparent that, as soon as the bolt 3registered with the bolt receiving recess that such bolt was urgedoutwardly under the combined pressures of the springs, 6I and 62 bearingagainst the lever I6 which is attached tothe-strip I3.

When it is desired to open the door from the outside, the press buttonor cylinder 33 is pressed inwardly, and such inward movement upon thestud 31 causes the stop bar 30 to be moved inwardly into the slot 2191in the plunger 4, thus sliding it from out of contact with the end ofthe block 6. Immediately the stopvbar 30 is depressed into the slot 29out of contact with` the block 6, such block is free to slide across theface of the plunger 4, as illustrated in Figures 4- and 6, under thecompression of thev spring 62 engaging the lower end of the lever I6which in turn engages the end of the block 6. Such movements of theblock 6 and lever I6 about the fulcrum point 2D cause the upper end ofthe lever I6; to be swung in a counter-clockwise, direction, thusretracting the strip I3 and bolt 3 from the recess 56. As soon as thisoccurs the door is free to open and the compression of the; spring 60 inthe door jamb acting against the lug B kicks the Vdoor open. When thedoor is opened to a point beyond the door jamb, the plunger 4i; is freeto be pushed outwardly under the inuence of the compressed spring IIacting against the rod 9I which is attached to the plunger 4, so thatthe plunger 4 is moved outwardly into the position illustrated in Figurel wherein the locking bar 3l!v is free to swing upwardly from its slot29 under the influence o1 the spring 40: surrounding the stud 31 andthus re-engage the end of the block 6, whereby the lock mechanism isagain in the position as illustrated in Figure 1.

From the foregoing description it will be seen that I utilize theinwardy swinging movement of the door relatively to the door jamb tocompress the spring mechanism which shoots the door bolt and that,although relatively strong bolt springs are used, the compression ofsuch springs through the engagement of the plunger 4 with the door jambis quite imperceptible in closing the door. As the release` of thespring tensions is achieved by what might be describedV as a` triggermechanism, provided by the stop bar 3U disengageably retaining thespring held rmoving blockIi,` the pressure required to move the, pressbutto'ninwardly to disengage the locking bar 30 is only very slight.When. it is:` desired to lockA the door, the bolt 45, is' swung into theposition illustrated in; dotted lines in Figurev 8 by the actuation ofthe key 4.6,. so that its engagement with the top of thestud 31 preventsthe cylinder 33 being pushed inwardly to open the door; Although l haveshown aparticular embodiment of my invention, itis to be understood thatI can make any such changes: and alterations asy may from time to timedeem necessary without departing from the spirit of my invention as setforth in the appended, claims.

What I claim as my invention is:

l. InV a door lock, a bolt normally'in the retracted position. when, thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor isv being closed, a lever swingable with and extending between theplunger andthe bolt and having one end movable with the; plunger and theother end movable with the bolt, a spring bearing against the leverintermediately of itsi length and compressible against the lever underthe levers movement in conjunction with the inward movement of theplunger, said compressed spring swinging the lever to shoot the boltwhen the bolt registers with its` bolt receiving orifice in the doorjamb,

a second` spring bearing against the end of the' leverV which is movablewith the plunger, said spring being under compression when the lever hasbeen swung to shoot the bolt, a fulcrum against which the lever bearswhen the bolt is in theshot position, a releasable element retaining theend of the lever againstwhich the second compressed spring bears, andmeans operable from the outside of the door for releasing the elementfrom out of retaining engagement with the lever toy permit the lever toswing about. the fulcrum under the inuence of the second spring andretract the bolt.

2. In a doorl lock, a bolt normally in the retracted` position when thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor is being closed, a lever swingable with and extending between theplunger and the bolt and having one end movable with the plunger and theother end movable with the bolt, a, spring bearing against the leverintermediately of its length and compressible againstthe lever under thelevers movement in conjunction with the inward movement of the plungensaid; compressed spring vswinging the lever to shoot the bolt when thebolt registers with its bolt receiving orice in the door jamb, a secondyspring bearing against the end of the lever which is movable with theplunger, said spring being under compression when the lever has beenswung to shoot the bolt, a lever swinging and spring compressing membermovable in conjunction with the plunger, an element movable into and outof coupling relationship between the plunger and the lever swinging andspring compressing member, and a member manually operable from theoutside ot the door to move said element out of coupling relationshipbetween the plunger and the lever to permit the lever to swing under theinfluence of the second spring and retract the bolt.

3. In a door lock, a bolt normally'in the retracted position whenthedoor is open, a plunger protruding from the lock when the door isopen and positioned to engage and be pushed inwardly byi the door jamb;as. the door. is being closed,

a lever swingable with and extending between the plunger and the boltand having one end movable with the plunger and the other end movablewith the bolt, a fulcrum positioned intermediately of the length of thelever and against which the lever rests when either the bolt or theplunger are protruding, a pair of springs compressed by the inwardmovement of the plunger in its engagement with the door jamb and tendingto shoot the bolt, the inward movementV of the plunger moving theV leveraway from its fulcrum, one of said springs swinging the lever towardsthe fulcrum to shoot the bolt when the bolt registers with its boltreceiving orice in the door jamb, the shooting of the bolt returning thelever into contact with the fulcrum, the second spring remaining incompression and tending to swing the lever about its fulcrum and retractthe bolt, and a member manually actuated from the outside of the door torelease the lever to swing about its fulcrum under the inuence of thesecond spring and retract the bolt.

4. In a door lock, a bolt normally in the retracted position when thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor is being closed, a lever swingable with and extending between theplunger and the bolt and having one end movable with the plunger and theother end movable with the bolt, a fulcrum positioned intermediately ofthelength of the lever and against which the lever rests when either thebolt or the plunger are protruding, a pair of springs compressed by theinward movement of the plunger in its engagement with the door jamb andtending to shoot the bolt, the inward movement of the plunger moving thelever away from its fulcrum, one of said springs swinging the levertowards the fulcrum to shoot the bolt when the bolt registers with itsbolt receiving orifice in the door jamb, the shooting of the boltreturningthe lever into contact with the fulcrum, the second springremaining in compression andV tending to swing the lever about itsfulcrum and retract the bolt, a lever swinging and spring compressingmember movable in conjunction with the plunger, an element movable intoand out of coupling relationship between the plunger and the leverswingingand spring compressing member, and a member manually operablefrom the outside of the door to move said element out of couplingrelationship between the plunger and the lever to permit the lever toswing and retract the bolt.

ly of the length of the lever and against whichV the lever rests wheneither the bolt or the plunger are protruding, a pair of springscompressed by the inward movement of the plunger in its engagement withthe door jamb and tending to shoot the bolt, the inward movement of theVplunger moving the lever away from its fulcrum,

one of said springs swinging the lever towards the iulorum to shoot thebolt when the bolt registers with its bolt receiving orifice in the doorjamb, the shooting of the bolt returning the lever into contact with thefulcrum, the second spring 5. In a door lock, a bolt normally in there-Y remaining in compression and tending to swing theV lever about itsfulcrum and retract the bolt, a trigger mechanism normally retaining thespring urged bolt in the protruding position when the door is closed,and a press button carried on the outer face of the door and adaptedupon being pushed inwardly to release the trigger mechanism and permitthe lever to swing and retract the bolt.

6. In a door lock, a bolt normally in the retracted position when thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor is being closed, a lever swingable with and extending between theplunger and thebolt and having one end moveable with vthe plunger andthe other end movable with the bolt, a fulcrum positioned intermediatelyof the length of the lever and against which the lever rests when eitherthe bolt or the plunger are protruding, a pair of springs acting againstone side of the lever, a second` lever pivoted intermediately of itslength and against-the opposite end portions of which the .springs bearso that the compression force of one spring is transmitted to the otherthrough the second lever, said springs being compressed by the inwardmovement of the plunger in its engagement with the door jamb and tendingto shoot the bolt,V the inward movement of the plunger moving the leverVaway from its iulcrum to shoot the bolt when vthe bolt registers withits bolt receiving orifice in the door jamb, the shooting of the boltreturning the lever into contact with the fulcrum wherein both of saidsprings remainY inV compression, the first spring urging the'boltoutwardly and the second spring tending to urge the plunger outwardlyand retract the bolt, a lever swinging and spring compressing membermovable in conjunction with the plunger, an element movable into and outof coupling relationship between the plunger and the lever swinging andspring compressing member, and a member manually operable from theoutside of the door to move said element out of coupling relationshipbetween the plunger and the lever to permit the lever to swing andretract the bolt.

7. In a door lock, a bolt normally in the retracted position when thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor is being closed, a lever swingableY with and extending between theplunger and the bolt and having one end movable with the plunger and theother end movable with the bolt, a fulcrum positioned intermediately ofthe length of the lever and against which the lever rests when eitherthe bolt or the plunger are protruding, a pair of springs Vactingagainst one side of the lever, a second lever pivoted intermediately ofits length and against the opposite end portions of which the springsbear soI that the compression force of one spring is transmitted to theother through the second lever, said springs being compressed by theinward movement of the plunger in its engagement with the Vdoor jamb andtending to shoot the bolt, the inward movement of the plunger ymovingthe lever away from its ulcrum to shoot the bolt when the bolt registerswith its bolt receiving oriice in the door jamb, the shooting Vof thebolt returning the lever into contact with the fulcrum wherein both ofsaid springs remain in compression, the first spring urging the boltoutwardly and the second spring tending to urge the plunger outwardlyand retract the bolt, a trigger mechanism normally retaining the secondspring vagainst expansion and retraction of the bolt when the door isclosed, and a press button carried upon the outer face of the door andadapted upon being pushed inwardly to release the trigger mechanism forthe retraction of the bolt.

8. In a door lock, a bolt normally in the retracted position when thedoor is open, a plunger protruding from the lock when the door is openand positioned to engage and be pushed inwardly by the door jamb as thedoor is being closed, a lever swingablewith and extending between theplunger and the bolt and having one end movable with the plunger and theother end movable with the bolt, a fulcrum positioned intermediately ofthe length of the lever and against which the lever rests when eitherthe bolt or the plunger are protruding, a pair of springs acting againstone side of the lever, a second lever pivoted intermediately of itslength and against the opposite end portions of which the springs bearso that the compression force of one spring is transmitted to the otherthrough the second lever, said springs being compressed by the inwardmovement of the plunger in its engagement Vwith the door jamb andtending to shoot the bolt, the inward movement of the plunger moving thelever away from its fulcrum to shoot the bolt when the bolt registerswith its bolt receiving orice in the door jamb, the shooting of the boltreturning the lever into contact with the movable in conjunction withthe plunger against the lever, a projection on the block overlapping theplunger, a depressible member carried by the plunger and engaging theprojection to form a releasable coupling relationship between theplunger and the block, and a press button carried upon the outer face ofthe door and operably connected to the depressible member and adaptedupon being pushed inwardly to depress the depressible member from out ofcontact with the block projection and release the compression on thesecond spring to retract the bolt.

9. In a door lock, a bolt assembly normally in the retracted positionwhen the door is open, a plunger protruding from the lock when the dooris open and positioned to engage and be pushed inwardly by the door jambas the door is being closed, a spring element to shoot the bolt andretain it in its shot position compressible by the movement of theplunger into the lock, a stud member contained Within the door lock, ahook member pivotally mounted upon the bolt assembly andl positioned inproximity to the stud when the bolt is in the shot position, and amanually operable connection extending from the hook to the inside ofthe door whereby such hook can be moved into a position engaging thestud to retain the bolt against retractive movement, a second springelement also compressible by the movement of the plunger into the lockand tending to retract the bolt, a movable member normally retaining thebolt against retraction by the second spring, and means operable fromthe outside of the door to actuate the movable member from out of thebolt retaining position Whereby the second spring moves the bolt intothe retracted position when the hook member is out of engagement withthe stud.

ROBERT BUCHANAN MCFARLANE.

